Tempering mechanism



Jan. 13, wzs. 1,522,972

S. T. NELSON TEMPERI NG MECHANI SM Filed Nov. 8. 1923 aoV . whereblv,

Patented Jan. 13, 1925,

svnn r. Henson; or nranasan CIT?,

iivnrnnn, Assreivoa 'ro SULLIVAN'MACHINERY coMrAnY, ii oonroaarion or inassecnusn'rrs.

TEMBERING MEcHeivIsr/r.

Application fiied november s, 1923.' sria'ivc c"73,45o'.

. anisi'n', andl more particularly to an improved,

tempering mechanism for mining machine cutter bits..

proved tev pering inechaiiism'for; such bits, ditieflisjhed, from' subjec'tne theentire bit to thetempering bath as hereL tofore, it isjmade possible vto temper Only theworking or cutting eiiiljt-ofsaidv bit. `A further! object of my improved mechanism is td provideimprovedjmeans for' supporting the bits during tempering and dischargingthe same: after passage through thetemofmyinvention will hereinafter more fully appear. M j

Inwthe accompanying drawings I have shown for purposes of illustration one form which my invention may assume in practice.

In these drawings,-4 o o' Fig; l is a diagrammatic side elevatiom partially in longitudinal section, of my improved mechanism, showing a furnace arranged adjacent the same.

Fig. 2 is a vertical section taken substantially on line 2 2 of lFig. 1.

Fig. 3 detail` plan view of a portion of the bit conveyor, showing the bitcarrying means thereon.` i

Fig. tfis a transverse section of .the bit conveyor shown in Fig. 2, showing a bit disposed in position thereon. i

In this illustrative construction, I have shown tempering mechanism used in coniiection withla bit heating furnace l which may be of any suitable form and is preferably located adjacent the tempering mechanisni so that an operator may remove the bits and conveniently place them upon a moving part of the tempering mechanism. Asshown, the mechanism is entirely automatic in operation and comprises a generally rectangular casing or frame 2 mounted on suitable'supports or legs 3.'

Within this casing is suitably mounted i. the improved bit moving mechanism compering bath. `-Other objects and advantages i prising a conveyor ei* in the j form' of sfliat,

elongatechmetal strip upstafiflingil bit receiving'4 members 5` spaed along the outer face of the conveyor; These bit re-` ceiving' members lconsfst ef"pi'i'i'i'chedfsteel having slightly uptlufrned lo`o`pj `pld`rt`lih and. upstanding side portions `7 adapted to receivelaiid hold ablank, herein in` the form pf a' @aaa bit' s recess- These btrecevzingmembers are attachq to' the c'onveyor by any suitable 'Vm`eai`is", h rein by riveting.

it. i. -f.-- iN-, v,L,-., guided.. by. enable. Power derma ,means herein including one or more suitable ow'ir e sprockets v9, herein two, loteated. rtf'opjoozsiii ends' of thev casing and fldriven roiii any suitable soi'irceV ofpow'er at thisamefangular speed, but aS this forms iio iimpfrtant of my invention iti's notmshowh herein, and a p'lurality of guiding rolls oiq sprockets f 1'0. The powersprockets 9Mhave teeth` formed on their peripheries 'whichli'egistei` withiapei'- tures 9' formed in the conveyor 4' andfldisf posed between the bit receivingmeiif'ber 5 Which @seperate in the driving ef ansama These driving and guiding means are suiit 'inclined plane 'froinja point adjacent the heating furnace l laterally and downwardly around' the 10 adjacent o the drive sprock; et, into a'temperingtank or bath 13, herein containing water, with only thetips of the in the position` illu'sti'afed. in F ig. 4 during the temperiiig The conveyof" isk and i and V12,' respective'ly,

the conveyor :it an' bits entering the liquid and then upwardly I from' that tank and over an iiicline' around a plui'a-lity of rolls 10 and again downwardly into another tempering bath or tanklld, herein containing oil, through which the tips of the bitsjlikewise pass, then iipwa'rdly around another roll 10, the conveyor then discliarging the tempered bits at this point by gravity into a suitable receptacle lfand then following a path around the drive sprocket 9 beneath the tanks Hand 13, re-v spectively, rback to the starting point adjacent the heating furnace.

As a result of'inyiniprovemenn it willtbe noted that all tendency to temper the'eiitire bit and conslquently produce bits having hardened shanks which the setfscrews with difliculty has been entirely eliminated,

only the tips of the bits being snbjected-to the tempering batlis in my improved device due to the disposition of the conveyor at an angle to the bath and the consequent elimination of any tendency of a too slack or otherwise improperly adjusted conveyor to cause a flow over the bit body. Moreover, it will 'be noted that the bits are definitely held in position. oii the iiiclined conveyor at theV same tiine that they are readily and autoi matically separable therefrom when desired.

While I have in this application specifically described one form which my inven- ,,tion may assume in practice, it will be t"understood that this form of thesanie is shownfor purposesof illustration and that the invention may be modified and embodiedd in lvarious other forms without departing `,from its spirit or the scope of the appended 20'" claims.

`Wliat I'claim as newv and desire to secure by Letters Patent is:

'1.' In a tempering mechanism for blanks,`

,av temperinp' bath, and means disposed in 'an inclinecf position to immerse substanvtially the entire end of a blank'in said bath.

2.In a tempering mechanism for cutter bits, a tempering bath, and cooperating immersing means supporting a bit in inclined 'position so that only 'the. point is iminersed .in said bath.

3. In a tempering mechanism for cutter bits, a tempering bath, and immersing means supportiiig a bit in inclined position above said bath and automatically operative after immersion to discharge said bit. f

4. In a tempering mechanism for cutter bits, a plurality of tempering baths, and means to move a series of bits. above said baths in an inclined position so that only,

the points are immersed 5. In a tempering mechanism for blanks, a temperiiig bath, and means disposed in an inclined plane to move and support. the

'blanks in such manner as to immerse only the ends thereof in said bath.

6. In a tempering mechanism bits, a tempering for cutter bath, conveyor means for moving a series of bits above said bath, and means to guide said conveyor means iii au inclined plane so that only the points of the Vbits are' immersed in said bath.

7. In a tempering mechanism for cutter bits, a temperiiig bath, means to move a series of bits above said bath, and means to iiicline vsaid bits so only the points of the bits are imniersed in said bath. i

8. In a temperiiig mechanism for cutter bits, a tempering bath, a conveyor having bit receiving means disposed thereon adapted to move a series of bits above said bath,

and means to incline said bits so that theV points only are immersed in said bath.

9.-Iii a temperng mechanism for cutter bits, a plurality of tempering baths, means points only are immersed in said baths, and

means to discharge said bits.

11. A tempering mechanism for mining machine cutter' bits comprisingan inclined conveyor system having provision for carrying a bit with its point disposed below said conveyor, a bath, and i neans for 'passing said inclined conveyor over a bath in such a manner than only the point'of the bit is immersed.

12. A. tempering mechanism for cutter bits comprising an inclined conveyor-system having provision for carrying a bit' with its point disposed below the conveyor, ,a plurality of baths and means for Vpassing said inclined conveyor successively: over said baths in such a manner that only the point of the bit is immersed. v

' 13. 'A 'teinpering system for cutter bits comprising an' inclined conveyor system having provision for carrying a bitwitli its point disposed below-the conveyor, a water bath, an oil bath,a bit receptacle, and means for passing said bit relative to said elements in such a manner that the point only of the bit is immersedl in said water and oil baths successively and that the bit is subsequently i dischargecl into said receptacle.

14. In a tempering mechanism for blanks having projecting portions formed thereon, a tempering bath, and means vdisposed in an 4inclined position adjacent said bath for iin-I mersing only said` rprojecting portions tlierein.

15.. In a tempering a tempering bath, meansdisposed inan inclined position to move a series of "blanks adjacent said' bath so that only the points are inimersed, and means for holding said blanks in position on said means.` i

16. In a tempe-ring mechanismjfor blanks,

a tempering bath, means disposed in an inclined position to move a series of blanks adjacent said batli so thatonly'the points are iinmersed, and means provided with upstanding blank engaging portions'for holding said blanks in position. onsaid means.

' 17. In a tempering mechanism for blanks,

a tempering bath, means V,disposed in an ins clined position to move a series of blanks adjacent said vbath so that' only the points are immei'sed, and means including loop mechanism for blanks, I

portions for holding said'blanks 'in position on said means.

'18. In a tempering mechanism foricutter,

cluding sprockets cooperating with said apertures.

20. In a tempering mechanism for cutter bits, a temperingbath7 conveyor means for moving a series of bits above said bath, and means including a plurality of rolls to guide said eonveyor means in an inclined plane so that only the points of 'the bits are im- 20 mersed in said bath.

In testimony whereof I afiix my signature,

SVEN T. NELSON.

fllertificate of Gorreetion.

It is hereby certified that in Letters Patent No. 1,522,972, granted January 13, 1925, upon' the application of Sven T. Nelson, of Michigan City, Indiana, for an improvement in Tempering` M'echanism, errors appear in the printed specification requiring correction as follows: Page 2, lineS, claim 11, for the Word than read that; same page, line 90, claim 12, after the Word haths insert a comna; page 3, line 4:, claim 18, for the Word grincling read guiding; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the ease in the Patent O'l'lice.

signed and sealed this 7th day of. April, A. 111925.

[SEAL] KARL FENNING,

' Acting Uommz'ssz'omer of Patents. 

